Method for continuously preparing high-purity polym-phenylene isophthalamide resin solution
A technology of poly-m-phenylene isophthalamide and isophthaloyl chloride is applied in the field of polymer material production and industrialized continuous preparation of high-purity poly-m-phenylene isophthalamide resin solution, which can solve the problem of high production cost. , Poly-m-phenylene isophthalamide resin has problems such as narrow molecular weight distribution and large engineering investment
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Embodiment 1
[0025] The production equipment used in this embodiment is as figure 2 As shown, the structural features of the device are as follows.
[0026] The device includes solvent metering delivery system, m-phenylenediamine metering delivery system, isophthaloyl chloride metering delivery system, twin-screw mixer 13, polymerization reactor 15 and resin solution storage tank 18, etc.; solvent metering delivery system includes solvent storage Tank 1, solvent delivery pump 3 and solvent mass flowmeter 5; m-phenylenediamine metering delivery system includes m-phenylenediamine storage tank 2, m-phenylenediamine delivery pump 4 and m-phenylenediamine mass flowmeter 6; The formyl chloride metering delivery system includes an isophthaloyl chloride storage tank 9, an isophthaloyl chloride delivery pump 10 and an isophthaloyl chloride mass flowmeter 11; their connection relationship is: the output port of the solvent storage tank 1 and the solvent delivery The input port of the pump 3 is con...
Embodiment 2
[0030] This embodiment adopts the same implementation device as that of Embodiment 1, but the process parameters are different.
[0031]The solid m-phenylenediamine (MPD) raw material is heated and melted at a temperature of 75°C into a fluid liquid molten state, and placed in the m-phenylenediamine storage tank 2 for standby; the solid isophthaloyl dichloride (IPC) raw material is in Heating and melting at a temperature of 55°C into a liquid molten state with fluidity, and placing it in the isophthaloyl chloride storage tank 9 for standby; the N,N-dimethylacetamide (DMAc) solvent in the solvent storage tank 1 is passed through the solvent After delivery pump 3 and solvent mass flow meter 5 are metered, enter from an input port 7 farthest away from output port 14 on the twin-screw mixer 13 at a flow rate of 330.12 mass parts per hour; m-phenylenediamine in the m-phenylenediamine storage tank 2 After the melt of diamine (MPD) is measured by the m-phenylenediamine delivery pump ...
Embodiment 3
[0034] This embodiment adopts the same implementation device as that of Embodiment 1, but the process parameters are different.
[0035] The solid m-phenylenediamine (MPD) raw material is heated and melted at 70°C into a fluid liquid molten state, and placed in the m-phenylenediamine storage tank 2 for standby; the solid isophthaloyl dichloride (IPC) raw material is in Heating and melting at a temperature of 50°C into a liquid molten state with fluidity, and placing it in the isophthaloyl chloride storage tank 9 for standby; the N,N-dimethylacetamide (DMAc) solvent in the solvent storage tank 1 is passed through the solvent After delivery pump 3 and solvent mass flowmeter 5 are metered, enter from an input port 7 farthest from output port 14 on the twin-screw mixer 13 at a flow rate of 390.01 parts by mass per hour; m-phenylenediamine in the m-phenylenediamine storage tank 2 After the melt of diamine (MPD) is measured by the m-phenylenediamine delivery pump 4 and the m-phenyle...
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